Navy Yard Shooting

A gunman launched an attack Monday inside the Washington Navy Yard, killing 12 people before he was killed. The mass shooting was deadliest on a military installation in the U.S. since the attack at Fort Hood, Texas, in 2009. For stories on the the event: Navy Yard Shooting.

Shooting Military Building A U.S. Park Police helicopter removes a man in a basket from the Washington Navy Yard Monday, Sept. 16, 2013. Earlier in the day, the U.S. Navy said it was searching for an active shooter at the Naval Sea Systems Command headquarters, where about 3,000 people work. The exact number of people killed and the conditions of those wounded was not immediately known. (AP Photo/Jacquelyn Martin)